After posting the above pics I noticed a wear spot on the spider just below the roller. Didnt notice it at the dunes. Just went out and checked the arms, and sure enough, there were wear marks on the head of the weight screw where it was hanging up on the spider. Two of the flyweights were doing this. I loaded up the what Heelclicker told me to load on the arm.
Thinking this is what destroyed my primary.
Still think they used soft steel for the flyweights.
I ran my SLP on flat spotted rollers for a while and the flyweights did not show any wear on them, but these wore out in about 20 miles.